Porsche currently has a hybrid or electric version of every model in its lineup, either as prototypes or already in production. The automaker is destined to have a completely electrified lineup within a couple of years and is also pushing the envelope with green supercars like the upcoming 918 Spyder. The fact that Porsche is a performance brand makes it all the more impressive. Few other makes can lay claim to such a feat, which is why I happily label Porsche one of the greenest. Being green is not just about mileage, it's also about changing the game, pushing green technology envelope and leading the segment.